A novel Nickel-Aluminum alloy with Titanium for improved anode performance and properties in Molten Carbonate Fuel Cells

Domenico Frattini, Grazia Accardo, Angelo Moreno, Sung Pil Yoon, Jong Hee Han, SukWoo Nam

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The anode materials of MCFC require more investigations in order to boost performances at long term. In literature, many NiAl modified alloys have been proposed but not always enhanced cell performance and improved mechanical properties are achieved together. In this work, differently from previous literature, the use of Ti in a NiAl/Ti system is proposed as an effective strategy to enhance both mechanical and electrochemical properties. Results show that bending strength and stiffness increase whereas creep deformation under high pressure-temperature is lower, i.e. around 5–6%, compared to 7.5% of the standard benchmark. The preliminary cell tests carried out show also how the performance, in terms of current and voltage output, is better for anodes with Ti addition with a maximum power density of 165 mW cm−2 at 300 mA cm−2 for Ti 5% compared to 149 mW cm−2 of Ni5Al at the same current density. Finally, the best electrochemical behavior is found for the Ti 5% sample as it achieved the lowest internal and charge transfer resistance at the end of tests. These results suggest that NiAl/Ti systems can be eligible anode materials and are worthy to be investigated more in order to attract a renewed interest for development of MCFCs.

Original languageEnglish
Pages (from-to)90-98
Number of pages9
JournalJournal of Power Sources
Volume352
DOIs
Publication statusPublished - 2017 Jun 1

Keywords

  • Anode
  • Cell test
  • Characterization
  • Impedance
  • Performance

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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